Machine for the manufacture of scrolls.



No. 805,231. PATENTED NOV. 21, 1905. M. PEMBROKE.

MACHINE FOR THE MANUFACTURE OF SGROLLS. APPLICATION FILED APR. 3, 1905.

2 SHEETSSHEET l.

MICHAEL PEMBROKE, OF MONTPELIER, VERMONT.

MACHINE FOR THE MANUFACTURE OF SCROLLS.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed April 3, 1905. Serial No. 253,6 96.

To all whom it may concern:

Be it known that I, MICHAEL PEMBROKE, a citizen of the United States, residing at Montpelier, in the county of Washington and State of Vermont, have invented a new and useful Machine for the Manufacture of Scrolls, of which the following is a specification.

My invention relates to a machine for manufacturing steel or metal scrolls or scrollwheels such as are used in machines for polishing granite or other stone, being attached to a polishing-machine.

The object which I seek to attain with my invention is to manufacture these scrolls or scroll-wheels which have heretofore been shaped and manufactured by hand by means of power applied to my machine, thereby saving a large amount of labor and reducing the cost of manufacture by more than onehalf. I attain this object by'means of the machine illustrated in the accompanying drawings, of which Figure 1 represents a side view of said machine. Fig. 2 represents a top View of said machine. Fig. 3 represents a detail in perspective. Fig. 4 represents a top view of the machine preparatory to winding a metal scroll.

The machine consists of an upright frame A. The power is applied to the pulley H, the shaft connected therewith being held in place by the boX G and the standard F. At E there is a bevel-gear on the same shaft as pulley H, meshing with a large horizontallydisposed bevel-gear, which is fixed to and revolves the upright shaft C, said upright shaft being supported and held in place by the two bearings D D. At the top of the shaft 0 is connected the revolving circular table B, which contains the apparatus for turning the scroll. The frame on which the scroll is turned is on the top of said revolving circular table and is made in several sections, only two of which are illustrated, sections J and I. Section J is fixed, while section I and the other sections, which are all similar to section I, are removable from the circular table.

K represents a removable wedge, which fits between the inner end of the scrollframe and into a groove of the post M. The removable sections of the scroll-frame, like I, are held in place by the pegs L L L, which fit llllltO holes in the table B made to receive t em.

To operate the machine and manufacture a scroll, section I and all similar sections of the scroll-frame are removed. One end of a steel or other metallic strip from which the scroll is to be manufactured is then taken from the forge and after removing the Wedge K is placed against the inner end of the scroll-frame J. The wedge K is then laced in the groove of post M and forced bac into position, thus holding the end of the metal strip firmly between the Wedge K and the inner end of the scroll-frame J. The machine is then started, the circular table revolving to the left. As the table revolves more of the metal strip is drawn from the forge by the revolving table. When the table has revolved nearly once around and the strip of metal is about opposite the post M,

section I of the scroll-frame is put in place, being firmly held there by the pegs L L L. The table continues to revolve, winding the metallic strip around section I. WVhen the table has revolved around once more and the end of section I is about to be reached by the metal strip, another section of the scrollframe similar to section I and in continuation of the scroll-frame and reaching once around the table is placed in position and the winding of the metallic strip continued in the manner heretofore indicated. Other sections of scroll-frame similar to section I and in continuation of the scroll-frame are added with each revolution of the table until the metallic strip is turned into a scroll of the desired size and dimensions. The scroll can then be lifted from the table B, section I and others like it being removed, if necessary.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a machine for forming metal scrolls, a rotatable table, a central scroll-form there on, means for rotating said table, means for detachably fastening the end of a metal strip to the inner end of said scroll-form, a scrollshaped rib or section adapted to form when applied to said table a continuation of the scroll-form, and means for detachably holding said rib or section to the table.

2. In a machine for forming metal scrolls, a rotatable table, a scroll-form thereon, means for rotating the table, means for detachably fastening the end of a metal strip to the inner end of said scroll-form, a scrollshaped rib or section adapted when applied to said table to provide a continuation of said scroll-form, and pins on said rib or section for entering holes in the table for removably holding said rib in place, substantiallyas described.

3. In a machine for forming metal scrolls, a rotatable table, a scroll-form thereon, having its outer end overlapping its inner, means for rotating the table, wedging means located between the overlapping ends for clamping the end of a metal strip against the inner end of the scroll-form, and a scroll section or rib having means for detachably connecting it to the table to form a continuation of the scroll-form, substantially as described.

4. In a machine for forming metal scrolls, a table with means for rotating it, a scrollform thereon, means for clamping a strip of metal to the inner end of the form, a scroll section or rib, and means for detachably condescribed.

MICHAEL PEMBROKE. itnesses:

JAMES H. VVILSON, T. REDFIELD PHILLIPS. 

